Relay adjusting fixture



March 16, 1954 ac E 2,672,174

RELAY ADJUSTING FIXTURE Filed July 7, 1950 I5 Sheets-Sheet 1 March 16, 1954 MacPHEAT RELAY ADJUSTING FIXTURE 3 Sheets-Sheet 2 Filed July 7, 1950 //VV #701? AM. MAcP /ar 8/ March 16, 1954 A. M. MacPHEAT RELAY ADJUSTING FIXTURE 3 Sheets-Sheet 5 Filed July 7, 1950 Patented Mar. 16, 1954 UNITED res QFFICE signorto Western rated, New York, York Electric Company, Incorpo- N. Y., a corporation of. New

Application July 7, 1950; Serial No. 172,503

7 Claims. 1

This invention relates to adjusting fixtures and more particularly to a fixture for adjusting parts ofrelays.

The-fixture of the present invention is-particularly adapted to the adjusting of parts of relays for use telephone coin collector mechanism which mayincludea pivotal lever having a slotted lower end and various stop arms and lugs extending from the lever, pivotal spring actuatedrestoring levers for the lever and an associated armature carried upon a saddle member pivoted intermediate its ends on a frame which is fixed relative to a pair of coils having their cores fixed to a base plate. The lever restoring levers and saddle member are pivoted about a common axis on the frame by front and rear pivot screws. In this type of relay, it is very essential that the lower slotted end of the lever be located, when in its normal position, a predetermined number of degrees off of th vertical with respect to the pivotal axis of the armature while, at the same time, the lower surface of the armature when in its normal operative position shall b parallel to the plane of the top faces of the cores.

An object ofthis invention is the provision of a fixture for accurately and expeditiously adjusting-"relay parts.

In accordance-with the above object, the invention comprises a fixture which includes a reciprocable pin enterableinto the lower slotted end' of the relay lever to accurately angularly position such lever in a normal operative position with respect to thepivotal axis of the armatil-re; clamping means operable thereafter tohold the. relay with its lever correctly positioned upon the fixture during subsequent locating and adjusting operations. After the relay is clamped to the fixture, a pair of reciprocable forks rotatable to a. limited extent and carried by a universally mounted cam lever actuated positioning assembly'are moved inwardly over but in spaced relation with thetop. faces of the cores and then the positioning assembly is rocked. downwardly to permit: the forks to drop onto the top faces of the cores, wherethey freely adjust themselves, due to their limited rotarymovement and the universal mounting; ofthe; assembly, to. the plane of the. top faces of the cores. In this latter position of the positioningassembly, it will be in parallelism with the top. faces of the cores and held thereat by its weight. A plate sliolable on the positioning assembly andcarrying fingers is now movedforward to position rounded forward ends. of the fingers under and in. end.v surfaces: of the armature. A fork pivoted engagement with opposite on the slide plate'and carrying a finger also.pivoted on the. slide plate intermediate: the first fingers is now rocked downwardly to engage'the end ofthe pivotal finger with the topsurface of the saddle member to whichisfixedthe armature and. is tightened. thereagainst by a thUHIb'SC-IEBW on the fork bearing against the finger. The armature is now firmly locked parallel to. the top faces of the cores while the relayv lever is held in its correctangularposition and while so positioned, the various stop. arms, lugs and: armature restoring levers ar adjusted to provide the desired action thereof. in the operation: of the: relay.

Other objects and advantages. of the invention will be apparent fromv the following detailed description taken in conjunction with the accompanying drawings, in which Fig. l is. a fragmentary plan view of a. fixture embodying the features of this invention, the operating parts ofthe fixture being shownin: operated positions with a relay in position on its support and the referred. to. parts thereof ad.- justed;

Fig. 2 is a central longitudinal vertical sectional view taken on the line 2-4 ofFig. 1;

Fig. 3 is a vertical view one reduced scale of a portion of Fig. 2 showing certain parts of the fixture-in their inoperative positions, and

Fig. 4 is: a vertical sectional view taken on the line 4-4 of Fig. 1'.

Referring now to the drawings, particularly to Figs. 1, 2 and 4, there is shown a relay, indicated in general at I fl, comprising a base plate H of magnetic material having its opposite ends notched at |2l2 (Fig. l), the notches being used in mounting the relay on the coin collector mechanism with which it is used. The base plate ll supports a pair of coils l'l-l'l having magnetic material cores which terminate inpole pieces 2i-2l so shaped at their upper ends upon opposed inner faces, indicated at 23-43 (Fig. 4) as to leave but a small air-gap when a pivotal armature 25- is operated to take a position adjacent either of the pole piece faces. The armaturestructure comprises the armature proper '25 attached by screws. tit-26 (Fig. 1) to a saddle or channel-shaped member 27 (Fig. 2) pivoted intermediate its ends by front and rear pivot screws 35 and 3|, respectively, on a trame32 of non-magnetic material, which is frictionally supported on the polepieces 2l-2l and also secured by screws 33: thereto (Fig. 4 the frame surrounding a central magnet. 35 fixed to the base plate 11!. Also pivoted on the screws 30- and 3| is an armature actuated lever 36- having an offset lower slotted end 3?, which in use is connected 3 to a movabl element of an associated coin directing vane (not shown) of the coin controlled apparatus which includes the relay Hi.

The lever 36 includes a top portion 38 (Figs. 1 and 2) which extends over the armature assembly in spaced relation, and is slotted at 39 to provide access to the screws zit-2e. Upon the front side of the lever 36 (Fig. 2) is an apertured depending lug 12, its aperture being aligned with an aperture in the downwardly extending portion of the lever 36 at the rear of the relay, the two apertures receiving the front and rear pivot screws 39 and 31, respectively, upon which the lever is pivoted. Each end of the lever portion 38 has a central depending lug it which is normally slightly spaced from the upper surface of the armature 25 adjacent each end, the lugs serving as stop members for the relay actuated lever to limit its pivotal movement relative to the armature, but at the same time the movement of the armature in either direction about its pivots is transmitted to the lever by the engagement of the armature with the lugs. Also depending from each end of the lever portion 38 at its rear side, is a depending arm M which is normally spaced at its lower end a certain distance from the upper surface of the frame 32 and serves as a stop member for the relay actuated lever 36 to limit its pivotal movement in either direction.

Also pivoted on the screws 3% and 31 are two independent armature restoring levers 4 5-135 extending toward opposite ends of the armature, and each has a central depending arm Mi which normally is spring urged against the upper end face of the adjacent pole piece 21 by coiled tension springs Ail-41. Each lever 65 is provided upon its lower surface with circular struck down portions 50 (Fig. 4) engaging the adjacent upper surface of the relay actuated lever portion 38. The function of the spring urged levers 55 is to restore the armature 25 and lever 36, which move as a unit about their pivot pins 36 and 3!, except for the limited relative movement therebetween permitted by the slight spacing of the lever lugs 43-43 from the upper surface of the armature, to their normal positions. of the armature 25, its lower surface should be parallel with the upper faces of the pole pieces 21-21 when in its normal position. With the armature 25 thus normally positioned, the lower slotted end 3'! of the lever 36 should be located a predetermined number of degrees off of the vertical with respect to the pivotal axis of the armature.

The adjusting fixture to be presently described serves to accurately position and firmly hold the armature assemblage and the relay lever 36 in their normal positions, as just described, while the depending arms M l4 of the lever are adjusted by an operator bending them to provide the normal space between them and the upper surface of the frame 32, also the bending of the depending lugs 53- 23 on the lever 36 so that they will be normally slightly spaced from the upper surface of the armature, and also the bending of the depending arms 16-46 of the spring pulled armature restoring levers 45-45 so that when the relay is removed from the fixture, after such adjustment, the armature 25 and lever 36 will remain in their normal positions and thus in the operation of the relay they will function properly.

The adjusting fixture comprises a base 5| having a plate 52 fixed to its upper surface which projects from its right end Fig. 2. Fixed upon In the case the plate 52 at opposite ends in spaced relation are vertical standards 53 and 54. At its upperend the standard 53 is forked and fulcrumed at 5l-5s between its furcations is a swivel block 558 which in turn is fulcrumed at 59, upon an axis extending at right angles to the axis of the swivel back 5?, to furcations of a forked end of a plate til. The plate til is thus mounted for universal movement within prescribed limits on the standard 53, which permits it to adjust itself to parallelism with the upper end faces of the relay core pieces 2l2i when lowered to its operative position as shown in Figs. 1, 2 and i. At its opposite end the plate til is formed with outwardly and upwardly extending spaced arms 5 i--Gi. In the upper portions of the arms 6 l-tl aligned apertures are provided in which are mounted, for sliding movement in a direction parallel to the axis of the fulcrum 5t, slide rods 646 i. Each slide rod 6 5 is provided at its outer end with a handle 65 and its inner end with a forked formation 65. In addition to its longitudinal sliding movement, each slide rod 64 is capable of a limited rotary movement on its supporting arm (51. Pins fi'i6l carried in the arms 6i6l and extending transversely across the slide rods E l-M and normally slightly spaced from flat surfaces 63 formed on the slide rods intermediate their ends serve to permit the rods and their forked formations 65 to rotatably adjust themselves upon the upper end fa es of the relay core pieces 21-2! when the plate 6% is in its operative position (Figs. 1, 2 and 4).

Slidably mounted upon the upper surface of the universally mounted plate 6%, by cooperating guide bars 89E9, is a slide plate id. The movement of the slide plate id to the right Fig. 2, is limited by a stop pin ll fixed to the plate Gil and its movement to its operative position, as shown in Figs. 1, 2 and 4, by an adjustable stop screw 12 (Figs. 2 and 3) also carried by the plate 69. Pivoted at 13 at one end. upon the slide plate 15], is a plate 16 which at its oposite end carries a pair of spaced fingers 'l'lTl (Figs. 1, 2 and S), which when the slide plate '10 is moved upon the universally mounted plate 60, when the latter is in its operative position (Figs. 1, 2 and 3), will move under and engage the lower surface of the relay armature 25, the fingers ll-11 being rounded slightly so that they will slide under the relay armature and support the same from underneath in exact parallelism with the top faces of the pole pieces 2l2l.

Upon the left end of the pivotal plate 76 (Fig. 2) is pivoted at 19 a forked bracket Bil which is slotted, as indicated at $2 (Fig. 4) at its upper end and the plate it normally rests upon a pin 83 fixed in the slide plate 19 and parallel to the plane of the plate Til. Pivoted by one arm t l thereof, as indicated at 85, to the plate '56 is an inverted irregularly U-shaped member 86 having a stop arm 8'? and a depending finger 90. The arm 81 is fitted to slide in the slot #5 2 of the bracket 80, and the latter has a thumb screw 91 threaded into its outer end which upon the bracket being rocked counter-clockwise, as viewed in Fig. 3, about its pivot 19 to its operative position (Figs. 1, 2 and i) permits the member 35 to rock, by the action of gravity, in a similar direction to cause the lower end of the finger 3% thereof to enter the slot 3% of the relay lever portion 38 and engage the top surface of the saddle 21 of the relay armature assembly. With the finger 90 in this latter position, the thumb screw 91 is turned to cause its lower end to engage the U- shaped; member 86" bracket 89; the screw to cause: the: relay" armature assembly to be firmly locked:'in. a position which is parallel to the: top faces of the relay pole pieces" 2'I-2'I' between. the finger 99: and the fingers.ll-TIE.v

In rocking the: bracket 80" counter-clockwise; the: thunrhscrew 9th,, which is released at. this time is grasped and the bracket is rocked, until" the stop arm 8?! on then1ember 86 abuts the upper end' of the: bracket, as shown in Fig. 2-,. the: screw then being tightened, described. In a: clockwise movement of the-bracket 80' to withdraw the: finger 9t] from its operative position after release ing: the thumbscrew 91, a-pinw 92 carried by'the; bracket engages. the member 86 which is thus rocked in a similar direction to: its inoperative position (Fig; 3).

For clamping. the relay. I to thexfixture, the fixture base 51' carries a pair of. aligned and spaced p1ates'9'3-93i (Fig. 4) from the upper surfaces. of which extend relay locatingpins 94-94= which areadapted to enter the notches I2-I2. in. the relay base plate I I- Slidably mounted on the plates 93-93 for longitudinal movement are clamp. plates 95-95. which are adapted. at their inner ends to be engaged with the upper surfaces of the notched ends. of the relay base plate II. Itis to be understood that the relay locating pins 94-94 donot extend quite up to the upper sur face of the relay base plate I I. Each of the clamp plates 95-95 is slotted, as indicated at 98': (Fig. 4-), at its inner end and is forked at its outer end as indicated at 99 A headed pin I99 extends through the slot 98 and is threaded in the base 5 I. Acompression spring I'ilI surrounding the pin I 00 and hearing at opposite ends against the under surfaceof the clamp plate 95 and an upper surface of theplate 93, normally urges the clamp plate upwardly above the plane of the upper surface of the relay base plate I I. Pivoted at I92 110- each clamp plate 95 at its forked outer end isa' lever I05 having a cam formation I06, which bears against theupper surface of the clamp plate when the left hand lever, for example, is rocked clockwise, Fig. 4, thus lowering the inner end thereof into clamping relation with the relay base plate II. Theslot 9 8' in the clamp plate 95-permitsthe clamp plate to slide over the relay base plate H, and to be retracted therefrom, preceding the clamping of the relay II) on the fixture by the cam levers I (IS-I05 and following the movement of the cam lever to its inoperative position. In their outermost longitudinal positions, the clamp plates 95-95 do not interfere with the mounting of the'relay It on thefixture.

Fixed to the fixture base-5I between theclamp plates- 95-95 and the standard 54; is a vertical plate I97 havinga locating notch I99 in its upperportion for receiving and nesting the rear pivot screw 3 'I-for the relay armature as the relay notched base plate I I- is associated with the locatingpins '94-94 when the relay is mounted on the fixture. It will be understood that the pinsM-M serve to locate the relay I0 transversely, and the notch I98 locates it longitudinally on the fixture;

In order to position and hold the relaylever 36 in its normal position during the adjustment of the referred to relay parts, as previously mentioned, there is provided a reciprocable nonrotatable pin I I I which is guided in an aperture in the standard 54'. The pin III at its right end Fig: 2 is of rectangular'sh'aped cross section, indicatedat I I 2, slightly tapered from its outer end inwardly; and" disposed at an angle substantially of the: relay lever 36 by; an

6? similar to: that of the slot in'the offset lower end- 3-Ir of the vlever; Attached tothe. left end.- of the:

pin H I; Fig. 2', isvaforkedr member I;I-3 to which.

ispivoted at I I 4 a: hand. lever I I5 in. turn: pivotedi at. I I8 to abracket. extending; from the; sub-plate 5-2: mountedupon thebase 51.. Movement of the pin. I, limited: in; its" movement. to its on erative position (Fig. 1), wherein its: tapered. rectangularshaped end H52 entered inthe slot; adjustable stop; screw: H9 carried by the forked member I I3: onthe pin. engaging; a surface of the standard; 54., The movementzof. the pin. III? to its inoperative position. is limited by the lever: I I5. engaging the stand'ard153.

In order to lower the-universally mounted; plate 601 to: engage the forked formations 95-65 on the slide. rods 941-641 with the upper end faces of; the relay core piecesZI-ZI, asshown'in Figs. 1 and 4, and. to raise the plate after-the relay parts have beenadjusted, the. following mechanism; provided; Journalled on. the standard 54 is a. rock shaft IZI: (Figs. 1 and-'2)v to whichlarefixed; spaced cam shaped arms t'22-I22 which are: located in vertical? slots I25-I'25 formed in the. upper surface of the standard 54. The. cam shaped arms I22-I22iare arranged to engage the lower-surface of the plate 69' as shown in Fig. 3', upon the shaft I2.'I, being rocked inaclockw-ise' direction by means of: a hand lever I26, thus. raising the plate. Upon acountemclockwise: movement of the lever [26 to: lower the plate. 60' the lever will assumea vertical position (Fig. 2) In the lowered position of'the plate 50, the. cam. arms I22-I22 are substantially. fiu'sh with the upper surface of the standard 54, and freely spaced from the lower surface of the plate so that the forked formations 96-66 will rest by gravity on the upper end faces of the relay core pieces 2I-2I and the plate 60 will adjust itself inexact. parallelism therewith due to its universal mount- 111g.

In using the described fixture it will be assumed that the bracket Wand the pivotal member 89 having the finger 90 thereon and movable therewith are in their retracted or inoperative posi-- tions (Fig. 3) on the supporting plate It which carries the fingers 17-11" and is pivoted to the slide plate 19*, and that the latter is in its re tracted position upon the universally mounted plate 60 and abutting the stop pin H Also, that the plate 60*is in its raised position resting upon the cam shaped arms I22-I22 with the slide rods B l-64in their retracted outer positions thereon, the clamp plates -95 released and in. their outer positions on the plates 93-93 and also thatthe reciprocatory pin H I is in its retreated or inoperative position, the fixture is operated in the following manner.

With the various operating parts ofthefi'xt'ure positioned as above described, a relay Ill, which isto have parts previously'referred to accurately positioned and maintained whileother parts are adjusted, is placed upon the: fixture: with the notched relay base plate I l associated with the locating pins 94-94 projecting from the fixture plates 93-93 and with the. relayrear pivot screw 3'! nested in the locating notch IlIil-of' the plate :01. As thus positioned, the relay I 9 is trans versely and longitudinally located onthe fixture.

Thereafter the .hand lever I I 5 is rocked counterclockwise as viewed in Fig. 1 to: move the reci procatory' pin I I I forward to enter its rectangular shaped tapered end I I Z in the slotin the lower end 3 1- of the relay lever 36; as shown in:- the.

drawings, thus insuring that the lever will be accurately positioned and firmly held in its correct angular normal position while other positioning and adjusting operations are completed on the relay it. After thus positioning the pin III, the relay clamp plates 95-435 are slid toward each other to position their inner opposed ends over the notched ends of the relay base plate II. This is effected by grasping and using the hand lever EMF-I to slide the plates 95-95 into position, and thereafter rocking the levers (Fig. 4) in the manner previously described to cause the plates 95-95 to firmly clamp the relay to the fixture as shown in the drawings. Following the clamping of the relay in position, the flat forked formations 66-56 on the slide rods 64-64, the latter being carried on the universally mounted plate 69, are moved toward each other to position them over, but in spaced relation with, the top faces of the relay pole pieces 2 i--2 i. The handles 65 are used to thus move the slide rods 6464, and the inner end faces of the handles abutting the end faces of the slide rod carrying arms til-6i serve to limit the movement of the formations 6t6t toward each other.

After thus positioning the formations 88-436, the universally mounted plate til is lowered by rocking the hand lever H6 in a counterclockwise direction (Fig. 3) to the position shown in Fig. 2. This movement of the hand lever are causes the cam shaped arms 522-422, upon which the plate 60 is supported in its upper position to permit the plate to move downwardly, and finally rest in its lowered position by the action of gravity with the slide rod formations 6666 carried by the plate resting upon the top faces of the relay pole pieces 2 l-2 l. Due to the universal mounting of the plate 66 and the limited rotary movement of the formations tit-6t, the plate will adjust itself to exact parallelism with the top faces of the relay pole pieces 2i-2i in the position shown in the drawings.

The slide plate 10 on the thus lowered plate 60 is now move-d to the left to the position shown in Fig. 2, by grasping the bracket 86, the slide plate being moved until it engages the stop screw 12. This movement of the slide plate it moves the spaced fingers ll-ll on the plate i6 which is pivoted to the slide plate 10 under and into supporting engagement with the lower surface of the relay armature 25, and thus positioning it in exact parallelism with the top faces of the pole pieces 2 l-2l as shown in Figs. 1, 2 and 4.

After thus positioning the fingers lli'i, the pivotal bracket M, which is associated with the pivotal member 86 having the depending finger 90, is rocked counter-clockwise, as viewed in Fig. 2 by grasping the thumbscrew B l thereby causing the finger to move in a similar direction to its operative position shown in the drawings, the lower end of the finger coming to rest on the top surface of the relay saddle member 21 of the armature assemblage, and thereafter the thumbscrew 9i is tightened. The relay armature 25 is now locked in its normal position parallel to the top faces of the relay pole pieces 2 i-2i and as previously described, the forked relay lever 36 has been located and locked in its normal position relative to the pivotal axis of the armature.

Thereafter, the lugs 43- 53 and arms 4ll4 on the relay lever 36, and the arms 46 on the armature restoring levers 55 are adjusted by using a suitable bending tool and feeler gauges to provide the desired normal positions thereof relative to the associated relay parts so that the armature 25 and lever 36 will remain in their normal positions when the relay I0 is removed from the fixture, and the desired action of these parts will result in the operation of the relay.

To remove the thus adjusted relay IO from the fixture, the operations described hereinbefore in mounting the relay in position on the fixture, positioning and locking the parts in position, are simply reversed.

It is to be understood that the above-described arrangements are simply illustrative of the application of the principles of the invention. Numerous other arrangements may be readily devised by those skilled in the art which will embody the principles of the invention and fall within the spirit and scope thereof.

What is claimed is:

1. A fixture for use in adjusting a pivotal armature of a relay to normal parallelism with respect to end faces of two coil cores associated therewith and for holding the armature in such position during adjustment of various stop members and lugs relative to the armature and core faces comprising, means for locating and supporting the relay in position for such adjustment, a frame, means for mounting said frame for universal movement, a pair of slides movable on spaced portions of said frame to engage said faces of the cores to locate said universally mounted frame in exact parallelism with said core faces, a third slide movable on said frame and carrying fingers adapted to engage one face of the pivotal armature to position the same in parallelism with said pair of slides, a bracket movable upon said third slide, a finger movable upon said third slide and cooperating with said bracket for engaging an opposite face of the armature, and means on said bracket for forcing said finger toward the plane of said first fingers to clamp the armature therebetween and thus force it to exact parallelism with said core faces and hold it thereat while the various relay stop members and lugs are adjusted to the desired positions for retaining the armature in its normal position with respect to said core faces after the relay is removed from the adjusting fixture.

2. A fixture for use in adjusting a pivotal armature of a relay to normal parallelism with respect to end faces of two coil cores associated therewith and for holding the armature in such position during adjustment of various stop members and lugs relative to the armature and core faces and for positioning and holding a pivotal armature actuated lever having a slotted end in a normal position when the relay is positioned on the fixture comprising, means for locating and supporting the relay in position for such adjustment and positioning operations, means operable to enter the slotted end of the relay lever to position and hold it in its normal position, a frame, means for mounting said frame for universal movement, a pair of slides movable on spaced portions of said frame to engage said core faces to locate said universally mounted frame in exact parallelism with said core faces, a third slide movable on said frame and carrying fingers adapted to engage one side face of the pivotal armature to position the same in parallelism with said pair of slides, a bracket movable upon said third slide, a finger movable upon said third slide and cooperating with said bracket for engaging an opposite side face of the armature in an area intermediate said first fingers, and means on said bracket for forcing said finger toward the plane of said first fingers to clamp the armature therebetween and thus force it to exact parallelism With said core faces and hold it thereat while the various relay stop members and lugs are adjusted to the desired positions for retaining the armature in its normal position with respect to said core faces and the operating lever in its normal position after the relay is removed from the adjusting fixture.

3. A fixture for use in adjusting a pivotal armature of a relay to normal parallelism with respect to upper end faces of two vertical coil cores associated therewith and for holding the armature in such position during adjustment of various stop members and lugs relative to the armature and upper end core faces and for positioning and holding a pivotal armature actuated lever having a slotted portion in a normal position when the relay is positioned on the fixture comprising, means for locating and supporting the relay in position for such adjustment and positioning operations, means operable to enter into the slotted portion of the relay lever to position and hold it in its normal position, a frame, means for mounting, said frame for universal movement, a pair of slides having a, limited rotary movement on spaced arms of said frame to engage said core faces to locate said universally supported frame in exact parallelism with said core faces, a third slide movable on said frame in a direction perpendicular to the movement of said pair of slides and supporting two spaced fingers adapted to engage a lower face of the pivotal armature to position the same in parallelism with said pair of slides, a bracket movable upon said third slide, a finger movable upon said third slide and cooperating with said bracket for engaging an upper face of the armature, and means on said bracket for forcing said finger toward the plane of said two fingers to clamp the armature therebetween and thus force it to exact parallelism with said core faces and hold it thereat while the various relay stop members and lugs are adjusted to the desired positions for retaining the armature in its normal position with respect to said core faces and the relay lever in its normal position after the relay is removed from the adjusting fixture.

4. A fixture for use in adjusting a pivotal armature of a relay to normal parallelism with respect to end faces of two vertical coil cores associated therewith and for holding the armature in such position during adjustment of various stop members and lugs relative to the armature and core faces and for positioning and holding a pivotal armature actuated lever having a slotted portion in a normal position when the relay is positioned on the fixture comprising, means for locating and supporting the relay in position for such adjustment, means operable to enter the slotted portion of the relay lever to position and hold it in its normal position, means for clamping the relay to said supporting means, a plate, means for mounting said plate for universal movement, a pair of slides movable longitudinally on spaced portions of said plate to positions spaced from and above said core faces in a raised position of said plate, means for raising and lowering said universally mounted plate, whereby in its lowered position it will be located in exact parallelism with said core faces when the slides engage said core faces, a third slide movable on said plate intermediate said pair of slides and supporting two spaced fingers adapted to engage one face of the pivotal armature to position the same in parallelism with said pair of slides, a

bracket movable upon said third slide, a finger movable upon said third slide and cooperating with said bracket for engaging an opposite face of the armature, and means on said bracket for forcing said finger toward the plane of said two fingers to clamp the armature therebetween and thus force it to exact parallelism with said core faces and hold it thereat while the various relay stop members and lugs are adjusted to the desired positions for retaining the armature in its normal position with respect to said core faces and the relay lever in its normal position after the relay is removed from the adjusting fixture.

5. A fixture for use in adjusting the armature of a two-core relay with respect to end faces of the cores of an assemblage and to a lever assembly adapted to be actuated by said armature, which comprises a base, a forked plate, means on the base for supporting said plate for universal movement relative to the base, means for positioning said assemblage on the base in a predetermined position with respect to said plate, a pair of means carried slidably on the arms of said plate for engaging said relay armature upon being moved toward each other thereby to position said armature in exact parallelism with said core faces, and means mounted on the base for clamping the armature against said slidable means to hold it in position while portions of the armature-actuatable lever assembly are bent to proper relation with the armature.

6. A fixture for use in adjusting the armature and a lever assembly adapted to be actuated by said armature of a two-core relay with respect to end faces of the cores and a relay-mounting portion, respectively, which comprises a base for supporting such a relay thereon, a guideway mounted universally on the base and provided with projections for engaging the end faces of the relay cores, a slide mounted on the guideway, a plurality of clamping jaws carried by the slide for clamping the armature in a predetermined position with respect to the end faces of the relay core, and means mounted on the base for locating the lever assembly in a predetermined position with respect to the relay-mounting portion.

7. A fixture for use in adjusting the armature and a lever assembly adapted to be actuated by said armature of a two-core relay with respect to end faces of the cores and a relay-mounting portion, respectively, which comprises a base, means for engaging the relay-mounting portion to support the relay on the base, a guideway mounted universally on the base and pivotal toward and away from the end faces of the relay, said guideway being provided with projections for engaging the end faces of the relay cores, a slide mounted on the guideway, a plurality of clamping jaws carried by the slide for clamping the armature in a predetermined position with respect to the end faces of the relay cores, and means mounted on the supporting means for loeating the lever assembly in a predetermined position with respect to the relay-mounting portion.

ALEXANDER M. MiicPHEAT.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 1,996,170 Padgett Apr. 2, 1935 2,337,383 Franz Dec. 21, 194.3 2,428,958 Bohaboy et a1. Oct. 14, 1947 2,430,365 Polivka Nov. 4, 1947 

